A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6150-01-198-2070
NSN 5950-00-275-6146
NSN 5960-00-445-3954
NSN 5915-01-215-0792
NSN 4140-01-415-2478
NSN 5905-01-435-6357
NSN 6135-01-534-3007
NSN 6320-00-004-9158
NSN 5945-01-250-3254
NSN 5975-01-192-4856
NSN 5925-01-322-1147
NSN 6320-01-089-9086